Borrowings - Additional Information (Detail) $ in Millions, $ in Millions				1 Months Ended					9 Months Ended
		Mar. 31, 2020 USD ($)	Jan. 01, 2020	Apr. 30, 2020 AUD ($)	Mar. 31, 2020 USD ($)	Feb. 29, 2020 USD ($)	Dec. 31, 2019 AUD ($)	Nov. 30, 2019 AUD ($)	Mar. 31, 2020 AUD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 AUD ($)	Jun. 30, 2019 USD ($)
Debt Instrument [Line Items]
Total borrowings	[1]	$ 1,115			$ 1,115							$ 1,453
Interest coverage ratio									3.00%
REA Group [Member]
Debt Instrument [Line Items]
Operating income leverage ratio				3.25%
Restricted cash				$ 50.0
REA Group [Member] | Credit facility 2019 [Member]
Debt Instrument [Line Items]
Debt instrument unused borrowing capacity percentage fee				50.00%
Foxtel [Member] | Fiscal Year Two Thousand And Twenty One [Member]
Debt Instrument [Line Items]
Operating income leverage ratio			3.50%
Foxtel [Member] | Fiscal Year Two Thousand And Twenty Two [Member]
Debt Instrument [Line Items]
Operating income leverage ratio			3.25%
Foxtel [Member] | Share Holders Loan [Member]
Debt Instrument [Line Items]
Proceeds from shareholder loans								$ 200.0
Foxtel [Member] | Term Loan Facility 2019 [Member]
Debt Instrument [Line Items]
Operating income leverage ratio									3.75%
Interest coverage ratio									3.50%
Debt instrument fixed interest rate		6.25%			6.25%					6.25%	6.25%
Proceeds from long term line of credit									$ 250.0
Foxtel [Member] | Term Loan Facility 2019 [Member] | Fiscal Year Two Thousand And Twenty One [Member]
Debt Instrument [Line Items]
Operating income leverage ratio			3.50%
Foxtel [Member] | Credit facility 2019 [Member]
Debt Instrument [Line Items]
Percentage of applicable margin payable as commitment fee									45.00%
Proceeds from term loan facilities									$ 610.0
Foxtel [Member] | Credit facility 2019 [Member] | Fiscal Year Two Thousand And Twenty One [Member]
Debt Instrument [Line Items]
Operating income leverage ratio			3.50%
Foxtel [Member] | Credit facility 2019 [Member] | Fiscal 2020 [Member]
Debt Instrument [Line Items]
Operating income leverage ratio									3.75%
Foxtel [Member] | Telstra Facility [Member]
Debt Instrument [Line Items]
Telstras Ownership Percentage Of Foxtel						35.00%
Foxtel [Member] | Telstra Facility [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Due date						Dec. 31, 2027
Unsecured revolving credit facility available amount						$ 170
Interest rate margin						7.75%
Foxtel [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Repayment of revolving credit facility								1,100.0
Maximum [Member] | REA Group [Member]
Debt Instrument [Line Items]
Operating income leverage ratio				4.00%
Maximum [Member] | REA Group [Member] | Credit facility 2019 [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin				2.00%
Maximum [Member] | Foxtel [Member] | Credit facility 2019 [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin									3.75%
Minimum [Member] | REA Group [Member] | Credit facility 2019 [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin				0.85%
Minimum [Member] | Foxtel [Member] | Credit facility 2019 [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin									2.00%
Facility Due December 2019 [Member] | Maximum [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin							1.40%
Facility Due December 2019 [Member] | Minimum [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin							0.85%
Credit Facility Two Thousand Fourteen [Member] | Foxtel [Member]
Debt Instrument [Line Items]
Repayment of revolving credit facility								200.0
Due date									Jan. 01, 2020
Credit Facility Two Thousand Fifteen [Member] | Foxtel [Member]
Debt Instrument [Line Items]
Total borrowings	[2]	$ 0			$ 0							281
Repayment of revolving credit facility								400.0
Due date	[2]								Jul. 31, 2020
Debt instrument fixed interest rate	[2]	0.00%			0.00%
Credit Facility Two Thousand Sixteen [Member] | Foxtel [Member]
Debt Instrument [Line Items]
Total borrowings	[2]	$ 0			$ 0							193
Repayment of revolving credit facility								400.0
Due date	[2]								Sep. 11, 2021
Debt instrument fixed interest rate	[2]	0.00%			0.00%
Working Capital Facility 2017 [Member] | Foxtel [Member]
Debt Instrument [Line Items]
Total borrowings	[2],[3],[4],[5]	$ 18			$ 18							$ 56
Due date	[2],[3],[4],[5]								Nov. 22, 2022
Debt instrument fixed interest rate	[2],[3],[4],[5]	3.79%			3.79%
Working Capital Facility Capacity								100.0
Facility Due December Two Zero One Nine [Member] | REA Group [Member]
Debt Instrument [Line Items]
Repayment of revolving credit facility							$ 240.0
Unsecured revolving credit facility maximum capacity											$ 480.0
Percentage of applicable margin payable as commitment fee							40.00%
Proceeds from term loan facilities							$ 170.0
Facility Due December Two Zero One Nine [Member] | Maximum [Member] | REA Group [Member]
Debt Instrument [Line Items]
Operating income leverage ratio									3.25%
Facility Due December Two Zero One Nine [Member] | Maximum [Member] | REA Group [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin							1.30%
Facility Due December Two Zero One Nine [Member] | Minimum [Member] | REA Group [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin							0.85%
News Corp Two Thousand And Nineteen Credit Agreement [Member] | Revised Line Of Credit Facility [Member]
Debt Instrument [Line Items]
Operating income leverage ratio							3.00%
News Corp Two Thousand And Nineteen Credit Agreement [Member] | Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Letters of credit sublimit under credit facility										$ 100
Unsecured revolving credit facility maximum capacity										750
News Corp Two Thousand And Nineteen Credit Agreement [Member] | Unsecured Revolving Credit Facility [Member] | Revised Line Of Credit Facility [Member]
Debt Instrument [Line Items]
Interest coverage ratio							3.00%
Unsecured revolving credit facility maximum capacity										1,000
Percentage of applicable margin payable as commitment fee		0.20%
Line of credit facility maturity date							Dec. 12, 2024
News Corp Two Thousand And Nineteen Credit Agreement [Member] | Unsecured Revolving Credit Facility [Member] | Base Rate [Member] | Revised Line Of Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate margin					0.375%
News Corp Two Thousand And Nineteen Credit Agreement [Member] | Unsecured Revolving Credit Facility [Member] | Eurodollar [Member] | Revised Line Of Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate margin					1.375%
Credit Agreement [Member] | Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility available amount										$ 650
Working capital facility 2017 Amended [Member] | Foxtel [Member]
Debt Instrument [Line Items]
Working Capital Facility Amended Capacity								$ 40.0
Debt instrument term								3 years
Working capital facility april two thousand twenty [Member] | REA Group [Member]
Debt Instrument [Line Items]
Total borrowings				$ 148.5
Due date				Dec. 02, 2021
Debt instrument unused borrowing capacity percentage fee				50.00%
Working capital facility april two thousand twenty [Member] | Maximum [Member] | REA Group [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin				2.75%
Working capital facility april two thousand twenty [Member] | Minimum [Member] | REA Group [Member] | Australian BBSY [Member]
Debt Instrument [Line Items]
Interest rate margin				2.00%
Overdraft facility [Member]
Debt Instrument [Line Items]
Borrowings discount rate				4.22%
Overdraft facility [Member] | REA Group [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility maximum capacity				$ 20.0
Annual facility fee				0.15%

[1] The Company’s outstanding borrowings as of March 31, 2020 were incurred by Foxtel and REA Group, consolidated but non wholly-owned subsidiaries of News Corp. These borrowings are only guaranteed by Foxtel and REA Group and their respective subsidiaries, as applicable, and are non-recourse to News Corp.

[2] During November 2019, certain subsidiaries of NXE Australia Pty Limited (“Foxtel” and together with such subsidiaries, the “Foxtel Debt Group”) repaid the outstanding borrowings under these facilities using a combination of new indebtedness and an A$200 million shareholder loan provided by the Company.

[3] As of March 31, 2020, the Foxtel Debt Group has undrawn commitments of A$2 million under this facility for which it pays a commitment fee of 45% of the applicable margin.

[4] Borrowings under these facilities bear interest at a floating rate of the Australian BBSY plus an applicable margin of between 2.00% and 3.75% per annum depending on the Foxtel Debt Group’s net leverage ratio.

[5] During November 2019, the Foxtel Debt Group amended its 2017 Working Capital Facility which, among other things, extended the remaining term to three years, decreased the capacity under the facility from A$100 million to A$40 million and increased the applicable margin.